Which uses more energy, a \(380\ W\) TV set in \(1\ hr\), or a \(1250\ W\) toaster in \(5\ minutes\)?
The formula for energy consumption is
Energy consumed by a TV for an hour:
\(P\) \(=\) \(380\ W\)
Time, \(t\) \(=\) \(1\ hour\)
On converting hour to seconds, we get \(t\) \(=\) \(s\)
[Note: Enter the answer as a whole number.]
The energy consumed by a TV for an hour is \(J\)
Energy consumed by toaster in \(10\ minutes\):
\(P\) \(=\) \(1250\ W\)
Time, \(t\) \(=\) \(5\ minutes\)
On converting minutes to seconds, we get \(t\) \(=\) \(s\)
[Note: Enter the answer up to one decimal place.]
The energy consumed by a toaster for \(10\ minutes\) is \(J\)
Thus, the energy consumed by the TV is the toaster.